If the vehicle listed above demonstrates poor acceleration performance in conjunction with flapping noises in the vicinity of the splash wall, this may be caused by a defective intake manifold.
The intake manifold consists of two plastic housing halves bonded together. A leaky bonded joint (A) causes air to escape as boost pressure increases, while also making a distinctive noise. Depending on the size of the leak, the following fault entries may occur in the engine control unit.
P0100 - Air-mass sensor malfunction
P3008 - Air flow too strong
If a leak is detected, the intake manifold must be completely replaced. It cannot be repaired. Replacing the intake manifold requires removing the high-pressure fuel lines for the injection valves (injectors).
In order to avoid leaks later, carefully remove and re-install the lines.
Carry out an extensive test drive!
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
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